Unit 9. Undersea world

welcome to our class
Teacher: Nguyen Thi Huyen My
Be Van Dan High school
How many oceans are there in the world?
There is only one ocean with five parts.
Can you name the parts of the ocean?
Atlantic Ocean
Indian Ocean
Pacific Ocean
Arctic Ocean
Southern Ocean (Antarctic Ocean)
unit: 9
undersea world

lesson 1: A.reading
before you read
* Look at the map and give the Vietnamese names for the oceans on the map
*Can you name the sea animal in each picture? The first letter of the word has been given to help you.
S….…………… J……….……..... T………………. S…………….…
eal
ellyfish
urtle
hark
while you read
* Read the text and do the tasks that follow.
There is only one ocean. It is divided into five different parts: the Pacific, Atlantic, Indian, Antarctic, and Arctic Oceans. There are also many other smaller seas, gulfs and bays which form part of them. Altogether they cover 75 percent of the earth’s surface. For centuries, people have been challenged by the mysteries that lie beneath the ocean. However, today’s scientists have overcome many of the challenges of the depth by using modern devices. They send submarines to investigate the seabed and bring samples of marine life back to the surface for further study. Satellite photographs provide a wide range of information, including water temperature, depth and the undersea populations. If modern technology did not exist, we would never have such precious information. Marine plants and animals fall into three major groups. Some of them live on or depend on the bottom like the starfish. Some are swimming animals such as fishes and sharks that move independently of water currents while others are tiny organisms that are carried along by the currents like the jellyfish. Plants and animals of the sea, however small or oversized, all contribute to its biodiversity were maintained,marine life would be at stake.
Task 1. The words in the box all appear in the passage. Fill in each blank with one of them. There are more words than needed.
gulf oversized biodiversity challenges
investigate tiny samples provide
Some plants and animals are referred to as ……….........organisms because they are extremely small.
Thanks to modern technology, scientists have been able to …..………………… the life of plants and animals that live under the sea.
A ………….. is a large area of sea that is partly surrounded by land
………………………. is a term that refers to the existence of different kinds of animals and plants which make a balanced environment.
These scientists have collected different …………………… to analyze for their experiment.
investigate
samples
tiny
gulf
Biodiversity
congratulation
* Vocabulary:
Cover (v) : [`kʌvə]
Surface (n) : [`sə:fis]
Challenge (v, n) : [`t∫ælindʒ]
Mystery (n) : [`mistəri]
Beneath (pre) : [bi`ni:θ]
Depth (n) : [depθ]
Submarine (n) : [,sʌbmə`ri:n]
Seabed (n) : [`si:`bed]
Marine (adj) : [mə`ri:n]
Satellite (n) : [`sætəlait]
Current (n) : [`kʌrənt]
Organism (n) : [`ɔ:gənizm]
Maintain (v) : [mein`tein]
be at stake [bi: ət steik]
Task 2. Read the passage again and then answer the following questions.
What percentage of the earth’s surface is covered by seas and oceans ?
How do scientists now overcome the challenges of the depth ?
What can submarines do to help scientists know about the undersea world ?
What can we learn from the satellite photos ?
What are the three groups of marine plants and animals ?
What would happen if the sea biodiversity were not maintained ?
congratulation
after you read
Work in pairs. Complete of the summary of the reading passage by filling each blank with a word or phrase given in the box below.
plants and animals discoveries huge closely connected
modern three – quarters mysterious biodiversity
Though covering (1) ……………….…… of the earth’s surface, the ocean has remained (2) ……………… to us until recently. With (3) ……………….. technology we have now made important (4) ……………………...about the (5) ………………… of marine life. We have learn that whether tiny or (6) ……..…………., all the (7)………………………….. of the sea are (8)……
………………………. .
three - quarters
mysterious
modern
discoveries
biodiversity
huge
plants and animals
closely connected
homework
Learn by heard the vocabulary.
Do exercises in the workbook.
3. Prepare the next lesson : B. Speaking





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